Dickey, ND 58431 Frost Dates
Frost dates for Dickey, ND, ZIP 58431
The last spring frost here typically falls around 05/10, about 255 days from today. The first fall frost typically arrives around 09/28, about 140 frost-free days later.
Zone 4b (-25 to -20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Dickey, not a forecast for this year.
What to do before the first frost
Zone 4b around Dickey has about 4 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/28 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dickey compares
At roughly 140 frost-free days, Dickey places 37,199 of 40,283 ZIP codes in this dataset. Within ND, it ranks 132 of 405.
Learn more
zone vs. frost date explains why Zone 4b and Dickey's frost date answer different questions, and the frost range explains how to read the range around Dickey's dates instead of trusting one.